Z -1 3/4=2 7/12,m-7 1/9=2 5/36,n-10 7/12=3 1/6,r-6 1/7=1 5/14 помогите плиииииииииииизззззззззззззз

z-1 3/4=2 7/12z-7/4=31/12z=31/12+7/4z=31/12+(7*3)/12z=31/12+21/12z=(31+21)/12z=52/12z=13/3z= 4 1/3m- 7 1/9=2 5/36m-64/9=77/36m=77/36+64/9m=77/36+ (64*4)/36m=77/36+256/36m=(77+256)/36m=333/36m=111/12m=9 3/12m=9 1/4n-10 7/12=3 1/6n-127/12=19/6n=19/6+127/12n=(19*2)/12+127/12n=38/12+127/12n=(38+127)/12n=165/12n= 55/4n=13 3/4r- 6 1/7=1 5/14r-43/7=19/14r=19/14+43/7r=19/14+(43*2)/14r=19/14+86/14r=(19+86)/14r=105/14r=15/2r=7 1/2